← Chesterfield, MO

Tap water quality report

ZIP 63088 — Chesterfield, MO

EPA monitoring across the 1 water supplier serving ZIP 63088 in Chesterfield, MO detected 34 contaminants. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier below, with the EPA limit for each.

1
water supplier
1,111,000
people served
34
contaminants found

What was found in ZIP 63088

The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
2231.5 µg/L 22%
of the EPA limit 10000 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Nitrate-Nitrite
2225 µg/L 22%
of the EPA limit 10000 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Fluoride
760 µg/L 19%
of the EPA limit 4000 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Copper
396.8 µg/L 31%
of the EPA limit 1300 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Nitrite
100 µg/L 10%
of the EPA limit 1000 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Lithium
86.8 µg/L
No EPA limit set
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2024
1/1 UCMR-5
TTHM
62.9 µg/L 79%
of the EPA limit 80 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Chloroform
55.56 µg/L
No EPA limit set
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Barium
42.22 µg/L 2.1%
of the EPA limit 2000 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
33.3 µg/L 55%
of the EPA limit 60 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Dichloroacetic Acid
27.7 µg/L
No EPA limit set
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Bromodichloromethane
12.4 µg/L
No EPA limit set
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Lead
6.95 µg/L 46%
of the EPA limit 15 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Dibromochloromethane
5.005 µg/L
No EPA limit set
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Trichloroacetic Acid
4.6 µg/L
No EPA limit set
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Monobromoacetic Acid
4.325 µg/L
No EPA limit set
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Monochloroacetic Acid
3.9 µg/L
No EPA limit set
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Selenium
3 µg/L 6%
of the EPA limit 50 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Dibromoacetic Acid
2.7 µg/L
No EPA limit set
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Chromium
1.94 µg/L 1.9%
of the EPA limit 100 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Arsenic
1.67 µg/L 17%
of the EPA limit 10 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Dichloromethane
1.1 µg/L 22%
of the EPA limit 5 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Di(2-ethylhexyl) Phthalate
1.085 µg/L 18%
of the EPA limit 6 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Bromoform
1.025 µg/L
No EPA limit set
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Atrazine
0.6100 µg/L 20%
of the EPA limit 3 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Diquat
0.5850 µg/L 2.9%
of the EPA limit 20 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Antimony, Total
0.5000 µg/L 8.3%
of the EPA limit 6 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
2,4-D
0.4200 µg/L 0.6%
of the EPA limit 70 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Picloram
0.2000 µg/L 0%
of the EPA limit 500 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Hexachlorocyclopentadiene
0.1000 µg/L 0.2%
of the EPA limit 50 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Benzo(A)Pyrene
0.0400 µg/L 20%
of the EPA limit 0.2000 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Ethylene Dibromide
0.0200 µg/L 40%
of the EPA limit 0.0500 µg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2019
1/1 SYR4
Pfba
0.0051 µg/L
No EPA limit set
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2024
1/1 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: MO AMERICAN ST LOUIS ST CHARLES COUNTIES · 1,111,000 people · 2025
1/1 LCR
Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.

Water suppliers serving ZIP 63088

SupplierStatePopulation served
MO AMERICAN ST LOUIS ST CHARLES COUNTIES MO 1,111,000

Frequently asked questions about ZIP 63088 tap water

Is the tap water in ZIP 63088 safe to drink?

EPA testing detected 34 contaminants across the water suppliers serving ZIP 63088. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.

Which water suppliers serve ZIP 63088?

1 public water supplier report EPA drinking-water monitoring for ZIP 63088. Each is listed above with its population served.

What contaminants are in ZIP 63088's water?

EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Copper, Nitrite, and others across this ZIP's suppliers. The full list with levels and sources is above.